|Rank|Nation|Gold|Silver|Bronze|Total|
|---|---|---|---|---|---|
|1|South Korea|9|2|1|12|
|2|Chinese Taipei|2|3|3|8|
|3|Spain|1|5|4|10|
|4|United States|1|2|7|10|
|5|Turkey|1|1|2|4|
|6|West Germany|1|0|3|4|
|7|Netherlands|1|0|1|2|
|8|Mexico|0|2|1|3|
|9|Indonesia|0|1|0|1|
|10|France|0|0|2|2|
|11|Australia|0|0|1|1|
|11|Canada|0|0|1|1|
|11|Ivory Coast|0|0|1|1|
|11|Denmark|0|0|1|1|
|11|Italy|0|0|1|1|
|11|Jordan|0|0|1|1|
|11|Nepal|0|0|1|1|
|11|Switzerland|0|0|1|1|
|Total|Total|16|16|32|64|

Question: what is the difference between the total number of bronze medals won by the united states and west germany?
Answer: 4